Dressing up for prom is tricky ! You have to be stylish, but not to classy since you are not going on the red carpet... it's a school party. You can't dress too trashy, you must have respect for your teachers. You also must be careful not to choose an outfit that will make you look older. It should be youthful and fun and easy to move around (for the dancing part ). What I'm trying to say is don't make yourself unrecognizable with all the heavy makeup and an outfit that ages you. Enjoy being young while you can !